| 基于微控制器的二线制智能变送器的设计 |
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| 引用本文： | 张凯临,宋小全,刘金涛.基于微控制器的二线制智能变送器的设计[J].计算机测量与控制,2007,15(4):488-490. |
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| 作者姓名： | 张凯临 宋小全 刘金涛 |
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| 作者单位： | 海洋遥感教育部重点实验室中国海洋大学海洋遥感研究所,山东,青岛,266100;中国海洋大学信息科学与工程学院电子工程系,山东,青岛,266100 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 为了降低设备复杂程度,对四种微控制器与4～20mA变送器接口的方案进行了研究并实现,并应用于海洋激光雷达的状态采集;该方案在硬件上采用了Microchip低功耗微控制器与TI公司4～20mA驱动器,通过PWM和滤波器进行驱动.软件上通过对输出的控制,可实现模拟信号数据及多种报警信号的传送,实际应用表明,该变送器的设计方案可靠、稳定、精度较高,且造价低廉,可降低原有方案的复杂度,是值得推广的接口方案.
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| 关 键 词： | 4～20mA 二线制 智能变送器 Microchip微控制器 |
| 文章编号： | 1671-4598（2007）04-0488-03 |
| 收稿时间： | 2006-12-23 |
| 修稿时间： | 2007-01-22 |
Realization of Two-wire Intelligent Transducer Based on MCU |
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| Zhang Kailin,Song Xiaoquan,Liu Jintao.Realization of Two-wire Intelligent Transducer Based on MCU[J].Computer Measurement & Control,2007,15(4):488-490. |
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| Authors: | Zhang Kailin Song Xiaoquan Liu Jintao |
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| Affiliation: | 1. Key Laboratory of Ocean Remote Sensing Ministry of Education of China, Ocean Remote Sensing Institute, Ocean University of China, Qingdao 266100, China; 2. Electronics Engineering Department, Information Science and Engineering Academy, Ocean University of China, Qingdao 266100, China |
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| Abstract: | In order to reduce device complexity,four kinds of interface circuit between microchip MCU and 4-20mA intelligent trans- ducer are introduced,and were used on states acquiring.The hardware is developed using microchip MCU and Texas Instruments Incorporat- ed 4-20mA driver,and driven by PWM via filters.Controlled with the software,output of analog signals and muhi-alarm signals can be transmitted.Tests and applications show that this intelligent transducer system is reliable and stable,while with higher precision and lower cost. |
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| Keywords: | 4-20mA two-wire intelligent transducer Microchip MCU |
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